hutchins



(No Model.) 2 Sheets-Sheet 1. G F HUTOI-IINS TAKE-UP MECHANISM FORLOOMS.

No. 461,978. Patented Oct. 27, 1891.

V \z o q- (No Model.) 2 Sheets-Sheet 2,

G. P. HUTOHINS. TAKE-UP MEOHANISM FOR LOOMS.

No. 461,978. Patented 001;. 27, 1891.

UNITED STATES PATENT OFFICE.

GEORGE F. HUTUHINS, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO THEKNOWVLES LOOM \VORKS, OF SAME PLACE.

TAKE-UP MECHANISM FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 461,978, dated October27, 1891.

Application filed April 17, 1891- Serial No. 389,334. (No model.)

To aZZ whom it may concern.-

Be it known that I, GEORGE F. HUTCHINS, a citizen of the United States,residing at \Vorcester, in the county of Worcester and State ofMassachusetts, have invented certain new and useful Improvements inTake-Up Mechanism for Looms; andl do hereby declare that the followingis a full, clear, and exact description thereof, which, in connectionwith the drawings making apart of this specification, will enable othersskilled in the art to which my invention belongs to make and use thesame.

My invention relates to take-up mechanism for looms; and the object ofmy invention is to provide a simple and convenient mechanism by means ofwhich the speed of the takeup roll can be varied at will by the operator-to suit different sizes of the filling-threads and the consequentdifferent number of picks in the fabric in the same piece of goods.

My invention consists in certain novel features of construction andoperation of the take-up mechanism, as will be hereinafter described,and the nature thereof indicated by the claims.

Referring to the drawings, Figure 1 is a side elevation looking in thedirection of arrow a, Fig. 2, showing a portion of a loom with myimproved take-up mechanism applied thereto. Fig. 2 is a front elevationof the parts shown in Fig. 1, looking in the direction of arrow 1), samefigure. Some of the parts shown in Fig. 1 are left off in Fig. 2 forsake of clearness in illustration. Fig. 3 is a detail of thebottom-shaft crank -'sleeve. Fig. 4 is a detail of the gripping-pawls onan enlarged scale, and Fig. 5 is a detail showing another position ofthe gripping pawls and canrlevers from what is shown in Fig. 1.

In the accompanying drawings, 1 is the loom side; 2, the breast-beam; 3,the bottom shaft, all as ordinarily constructed.

On the end of the bottom shaft 3 is fast a crank-hub 4, provided with aslot 5, out under (see Fig. 3) to receive the head of bolt 6, whichserves as the crank-pin and which can be moved toward or from the centerof the crank-hub to vary the throw of the crank and the consequentmovement of the loom take-up.

The hub '7 of the connector 8 is bored out to receive loosely the sleeve9, the barrel of which is a trifle longer than the thickness of the hub7, allowing the nut 6' of bolt 6 to be screwed down tight on the end ofthe sleeve, While allowing freedom of movement to the connector 8. Theopposite end of the connector 8 is pivotally attached at 10 to one armof the gripping-lever 11, pivoted loosely on a shaft 12, fitted to turnfreely in a bearing 13 on theloom side. (See Fig. 2. The other arm 14 ofthe gripping-lever 11 is made forked, having the hubs 15 on the endsthereof drilled to receive studs 16, on which are pivoted grippingpawls17. The gripping-pawls 17, provided with gripping-surfaces 17, act onthe rim 18 of the gripping-wheel 19, fast on the shaft 12, in the samemanner as is fully set forth in Letters Patent of the United Statesgranted to me, No. 438,269. In this instance the gripping-pawls 17 areprovided with arms 20, extending toward the center of the gripping-wheel19, and are offset so as to clear each other in a vertical direction, asshown in Fig. 4.

Pivoted loosely on shaft-12,between the hub of the gripping-wheel19 andthe grippinglever 11 14, is a lever 21, which terminates in a cam-point22, adapted to engage the arm 20 of the upper gripping-pawl 17, pivotedto the upper fork-arm of lever 11 14. The'lever 21 at the opposite endisjointed to the connector 23 and made adjustable in length by the screwends 24. The upper end of the connector 23 is jointed to the lower arm25 of the angle-lever 25 26, provided with a handle 26 and pivoted at 27on a stand 27, bolted to the loom side. (See Figs. 1 and 2.) The top ofthe stand 27 is provided with a rim 28, made in the arc of a circlewhose center is at the pivot-point 27 of the angle-lever 25 26. In theedges of the rim 28 are cut a series of notches 29, into which the plate30, fast on the lever-arm 26, is held by the spring of lever-arm 26 inwhatever position it may be left. a

Pivoted loosely on shaft 12, alongside of lever 21, is a second lever31, terminating in a cam-point 32, similar to cam-point 22 on 1ever 21and adapted to engage the arm 20 of the lower gripping-pawl17, pivotedon the lower fork-arm of lever 11 14. The lever 31 at its opposite endis provided with a slot 33, through which passes a screw 34, bindinglever 31 to lever 21. The slot 33 allows the cam-point 32 to be nicelyadjusted to the arm 20 of the pawl 17 relatively to the position of thecam-point 22 to its arm 20 of its gripping-pawl 17.

The operation of the parts above described is as follows: Motion beinggiven to thecrank 6 by the revolution of the crank shaft 3, thegripping-lever 1.1 14, through connector 8, is made to rock through anangle determined by the position of the crank-bolt 6 in the slot 5. Asstated inthe patent above referred to, the gripping-pawls 17 slip on therim 18 of the gripping-wheel 19 when the gripping-lever l1 14 is movedin the direction of arrow 0, Fig. 1; but 011 the reverse motion of thegripping-lever the gripping-pawls 17 grip the rim 18, turning the wheel19 in a direction opposite to that indicated by arrow c. If, however,the levers 21 and 31 are set, by throwing over hand-lever 26, so thatfor the last part of the movement of the grippingpawls 17 in thedirection of arrow 0 the campoints 22 and 32 engage the arms 20 of thegripping-pawls 17 ,said pawls 17 will be thrown back against thepressure of flat springs 36, fast to the hubs 15, into the positionshown in Fig. 5, and on the reverse movement of the lever 11 14,carrying the gripping-pawls 17, the wheel 19 will remain at rest up tothe point at which the arms 20 become disengaged from their respectivecam-points, allowing the springs 36 to throw the grippingpawls 17 intocontact with the rim 18 and move the wheel 19 for the balance of themovement in the opposite direction to arrow 0. The revolution of shaft12 is transmitted through pinion 37, fast on the inner end of saidshaft, to pinion 38, compound with pinion 39 and running loose on astud.40,'fast on the loom side. The pinion 39 meshes with a gear 41,fast on the end of the take-up'roll 42, which turns in bearings 43 onthe loom side. For convenience in turning the takeup roll 42 back whenit is desired to slack the cloth, I arrange the rim 28 and the adjustment of connector 23 and cam-points 22 and 32 in such a mannerthat-When the handv lever 26 is thrown forward against the stop 7 18 ofthe gripping-wheel 19 and prevent the take-up from running back by thestrain of the cloth. When thel1and-lever 26 is thrown forward againststop 44 to free the grippingwheel19 from the action of thegripping-pawls 17, the arm 48, integral with the lever 31, is made, byadjusting the position of stand 46 on the loom-frame, to strike theprojecting arm 49 of holdfast-pawl 47 freeing said pawl from thegripping-wheel and, allowing the take-up roll to be turned backwardbymeans of the handle 50, fast on the outer end of shaft 12.

The advantages of my improvements in take-up mechanism herein describedwill be appreciated by those skilled in the art.

It will be seen that, though the movement of the gripping-lever 11,carrying the grip ping pawls 17 and operated through the connector 8, isalways the same, the action of the gripping-pawls 17 on thegripping-wheel 19 is variable, for by means of the levers 21 and 31 thegripping-pawls are prevented from acting on the gripping-wheel to turnthe same, notwithstanding the regular movement of the gripping-lever 11,until such a time as is required to give the proper amount of movementto the take-up 'roll. hen the levers 21 and 31 are once adjusted bymeans of the mechanism connected therewith, the grippin g-wheel 19 willrevolve only so much each movement of the gripping-lever. By changingthe position of the levers 21 and 31 the action of the gripping-pawls 17on the gripping-wheel can be varied so as to regulate the revolution ofsaid grippingwheel, and, through theintervening mechanism, the takeuproll.

In the mechanism described in the patent above referred to thegripping-pawls will grip and turn the gripping-wheel during the wholemovement of the gripping-lever, and there is nothing in said mechanismto regulate the action of the gripping-pawls relatively to thegripping-lever carrying said pawls, which is an important feature in mypresent invention.

I have shown in the drawings and described herein the take-up mechanismdriven from a crank on the bottom shaft;-bnt it will be understood bythose skilled in the art that the take-up mechanism could be drivenequally well by attaching the connector 8 to the laysword or in anyother common way'. I have also shown in the drawings and describedherein the gearing train of the take-up roll 42 compounded withintermediate gears on a stud. This construction would not be necessaryin all cases, as the gear on the take-up roll could sometimes be rundirectly by the pinion on the shaft 12.

It will be understood that the details of construction of the severalparts of my takeup mechanism may be varied some from what is shown anddescribed, if desired.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In take-up mechanism for looms, the combination, with a take-up roll,connections to a gripping-wheel, and said gripping-wheel, of agripping-lever carrying pawls for oper- IIO ating the gripping-Wheel,and mechanism adapted to act on said gripping-pawls to vary the actionthereof on the gripping-wheel relatively to the movement of thegripping-lever, for the purpose stated, substantially as set forth.

2. In take-up mechanism for looms, the combination, with the take-uproll, connections to a gripping-wheel, and said gripping- Wheel, and agripping-lever carrying grippingpawls adapted to engage and move saidgripping-Wheel, and means for operating said gripping-lever, of leversadapted to engage the gripping-pawls and regulate the action thereof onthe grippingwheel relatively to the movement of the gripping-lever, forthe purpose stated, substantially as set forth.

3. In take-up mechanism for looms, the combination, with the take-uproll, connections to a gripping-wheel. and said grippingwheel, and agripping-lever carrying gripping-pawls for operating saidgripping-Wheel, and means for operating said gripping-lever,

of mechanism for acting on the gripping-pawls to prevent them fromgripping and revolving the gripping-Wheel during the full movement ofthe gripping-lever, for the purpose stated, substantially as set forth.

4:. In take-up mechanism for looms, the combination, with the take-uproll, connections to the gripping-Wheel, and said gripping-Wheel, andthe gripping-lever provided With gripping-pawls for operating saidgripping-Wheel, of means for regulating the action of the gripping-pawlsrelatively to the movement of the gripping-lever, consisting of leversadapted to engage the gripping-pawls, connections from said levers to ahand-lever, and said hand-lever, and a notched rim to hold thehand-lever in the position desired, for the purpose stated,substantially as set forth.

GEORGE F. HUTGI-IINS. Witnesses:

JOHN C. DEWEY, PHOEBE SYKEs.

